CODEWITHSUNDEEP
objective-cxcodeuitableview
David
David

Reputation: 99

UITableView's cells filled up with object properties...Dynamic or Static?

I'm pretty new to iOS Programming and I'm not too used with UITableView Cells.
I need to show some object properties in a table, in a "one property per cell" way.
If the data was stored in a NSArray, things would be much easier: I would use a "dynamic cell" layout and with the help of tableView:cellForRowAtIndexPath:'s indexPath variable, I'd fill the table easily.
But how to do the same when the data is "stored" in 20 properties of an object? Should I use the "static cell" layout maybe, and have a huge switch for addressing each of the 20 rows? Is there an easy and "cleaner" way to do this?

Thanks for your help!

Upvotes: 0

Views: 796

Answers (1)

rob mayoff
rob mayoff

Reputation: 385890

Key-value coding to the rescue! Make an array of the property names, and use valueForKey: to get the property values.

@implementation MyTableViewController {
    // The table view displays the properties of _theObject.
    NSObject *_theObject;

    // _propertyNames is the array of properties of _theObject that the table view shows.
    // I initialize it lazily.
    NSArray *_propertyNames;
}

- (NSArray *)propertyNames {
    if (!propertyNames) {
        propertyNames = [NSArray arrayWithObjects:
            @"firstName", @"lastName", @"phoneNumber", /* etc. */, nil];
    }
    return propertyNames;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [self propertyNames].count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell"];
    if (!cell) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"Cell"];
    }

    NSArray *propertyNames = [self _propertyNames];
    NSString *key = [propertyNames objectAtIndex:indexPath.row];
    cell.textLabel.text = [[_theObject valueForKey:key] description];
    return cell;
}

Upvotes: 1

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